Every mathematical problem is a puzzle waiting to be solved, and every solution is a step towards greater understanding.
每一个数学问题都是一个等待解决的谜题，每一个解决方案都是迈向更深入理解的一步。
When people are faced with a problem, they often think in terms of past experiences rather than looking at the actual structure of the problem.
如果你找到了平静和幸福，人们可能会嫉妒你，如果你找到了平静和幸福，人们可能会嫉妒你，如果你找到了平静和幸福，人们可能会嫉妒你，人们确实需要帮助，然而如果你帮助他们，却可能遭到攻击。
重要的不是你拥有多少，而是你有多享受你所拥有的。
我认为你不应该觉得自己已经取得了一切成就。
The great powers are always searching for opportunities to gain power at the expense of their rivals, which makes them inherently aggressive.
